DD

Duo Ding

CC China Tobacco Hunan Industrial Co.: 2 patents #25 of 42Top 60%
Overall (All Time): #1,786,387 of 4,157,543Top 45%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
12150474 Cooling cigarette filter and cigarette Wei Luo, Kejun Zhong, Wen Du, Lanying Xie, Liangsheng Qin +4 more 2024-11-26
12137730 Cooling cigarette filter and smoking product Wei Luo, Kejun Zhong, Jianfu Liu, Lanying Xie, Liangsheng Qin +5 more 2024-11-12